From 0c5873a9205d90212b2478aa3500bbfb5d5c6e50 Mon Sep 17 00:00:00 2001
From: Sven Verdoolaege <skimo@kotnet.org>
Date: Sun, 2 Dec 2012 15:33:42 +0100
Subject: [PATCH] isl_map_simplify.c: remove_dependent_vars: handle NULL input

Signed-off-by: Sven Verdoolaege <skimo@kotnet.org>
---
 isl_map_simplify.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/isl_map_simplify.c b/isl_map_simplify.c
index 50420344..c3bbbc41 100644
--- a/isl_map_simplify.c
+++ b/isl_map_simplify.c
@@ -1416,6 +1416,9 @@ static struct isl_basic_map *remove_dependent_vars(struct isl_basic_map *bmap,
 {
 	int i;
 
+	if (!bmap)
+		return NULL;
+
 	for (i = 0; i < bmap->n_div; ++i) {
 		if (isl_int_is_zero(bmap->div[i][0]))
 			continue;
-- 
2.11.4.GIT